题干

以前在地下铺设管线,马路就得“开膛破肚”,现在非开挖技术则避免了这些缺陷。非开挖技术是指通过导同、定向钻进等手段,在地表极小部分开挖的情况下铺设和修复各种地下管线的施工新技术,不影响交通出行和周边商铺,综合效益更高。非开挖技术的出现说明
①辩证的否定是事物的自我完善和发展
②作为最基本的实践活动,科学实验对社会发展起积极的推动作用
③事物的发展离不开主观意识的参与
④发挥主观能动性,人可以建立有利于实践的具体联系

A:①②

B:②③

C:③④

D:①④

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D

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(D)

    Every boy wants to find treasure.And Tom was no different.  One summer day Tom told Huck about his idea.

    "Where can we look for treasure?"asked Huck.

    "It's hidden on islands,under dead trees,but mostly under the floors in haunted(闹鬼的) houses."

    So,one Saturday afternoon Tom and his friend went to look for treasure as the haunted house on Cardiff Hill.It was a quiet and lonely which made the boys feel very frightened.They entered quietly,and explored downstairs.Everything was old,broken and dirty.They threw their tools in a corner and walked upstairs,but there was nothing there.They were just about to go downstairs and start digging when Tom stopped.

    "What is it?"whispered Huck,going white with fright.

    "Keep quiet! There's someone downstairs."

    The boys lay down,looking through the holes in the wooden floor.There were two men downstairs.One was an old Spaniard in a wide sombrero hat and the other was duty and unpleasant﹣looking.

    Tom and Hack shook with fear when they heard the Spaniard speak because they found it was Injun Joe He said,

    "It's time for us to move,partner.What will we do with the 650formtherobbery(抢劫)?""Let'skeep30each and leave the bag here."

    The dirty man went to the fireplace and moved a stone.Then he lifted out a bag full of money and look out some coins.The two boys forgot all their fears when they saw there was real treasure downstairs.

    Then Indian Joe started digging a hole with his knife and the knife hit something.

    "What is it?"asked the other man.

    "It's a box,"said Indian Joe.And he put in his hand and pulled out a handful of gold coins.The other man found the boys'tools,and they soon pulled out the box.

    "Where's thousands of dollars in there,"Said Indian Joe.

    "The Murrell Gang used this area one summer,"said his partner.

    "They most have hidden their money here."

    "What will we do with this,Joe?Will we bury(埋)it again?"

    "No,someone might find it,"said Indian Joe."Let's bury it in the member two den(巢穴)."

    Tom and Huck got up as soon as the two men left.They decided to watch out for the"man in the sombrero"when he came to town and find out where the member two den was.